作者单位：Department of Social and Preventive Epidemiology, School of Public HealthThe University of[1]Department of Internal Medicine, Sakura Medical CenterToho UniversityChiba,Japan[2]Osaka City University Hospital Administration DivisionOsaka,Japan[3]Department of GastroenterologyOsaka City University Graduate School of MedicineOsaka,Japan[4]Department of Public HealthOsaka City University Graduate School of MedicineOsaka,Japan[5]
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